Ну что, буду первым психопатом, который это установит :)

Notes:
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* v2.0 Alpha 1
**************

* C/C++ client interface version added
FB_API_VER defined to 20 for Firebird 2.0 in ibase.h
Contributor(s):
Nickolay Samofatov

* Implemented EXECUTE BLOCK statement
It is now possible to use dynamic PSQL with this statement
Contributor(s):
Vlad Horsun

* Implemented support for default parameters for stored procedures
Contributor(s):
Vlad Horsun

* DSQL parser changed
It now always detects table aliases ambiguity and abandoned support for implicit double table aliases
Contributor(s):
Arno Brinkman

* Fixed unregistered bug
Problems with interdependent views during restore process
Contributor(s):
Arno Brinkman

* Fixed SF #750664
Issues with read-only databases and transactions
Contributor(s):
Nickolay Samofatov

* Fixed unregistered bug
Fixed memory leak from connection pool in isc_database_info
Contributor(s):
Nickolay Samofatov

* Per-segment index selectivity maintenance
Per-segment selectivity information is now available to the optimizer opening possibilities for more clever access path decisions
Contributor(s):
Dmitry Yemanov
Arno Brinkman

* Fixed/re-worked invariant tracking in PSQL and request cloning logic
This fixes numerous issues with recursive procedures, for example SF #627057
Contributor(s):
Nickolay Samofatov

* Re-worked logic of updatable views
This solves problems with views that are implicitly updatable, but still have update triggers
Contributor(s):
Dmitry Yemanov

* Added SQL200X ROWS clause
New syntax to limit amount of records you want to get
Contributor(s):
Dmitry Yemanov

* Fixed SF #781610
Problems with -- comments in ISQL
Contributor(s):
John Bellardo
Blas Rodriguez Somoza

* Support for explicit cursor syntax in PSQL
It is now possible to declare and use multiple cursors in PSQL
Contributor(s):
Dmitry Yemanov

* LIKE/CONTAINING/STARTING WITH functions re-worked
1) functions now work with BLOBs correctly
2) use single-pass Knuth-Morris-Pratt algorithm for pattern matching
3) fix crash when NULL is used as ESCAPE character for LIKE
Contributor(s):
Nickolay Samofatov

* Fixed unregistered bug
Fixed server crash with explicit plans used in subqueries, when outer aggregation is performed.
Contributor(s):
Dmitry Yemanov

* Nulls ordering is changed to be SQL200X-compliant (SF #225218)
Implemented nulls placement behavior is MSSQL-like, works on ODS11 databases only since it requires new indices for operation.
Contributor(s):
Nickolay Samofatov

* Enable support for databases on raw devices
You can now use raw devices to store database. Exceptionally usable with database aliases
Contributor(s):
Erik Kunze
Nickolay Samofatov

* New indices code
Very fast, nicely tolerates large amount of duplicates, limit of 256 bytes key length removed
Contributor(s):
Arno Brinkman

* Internal logging enhanced
1) Implemented thread- and signal- safe debug logging facilities
2) Updated routines that print out various internal structures (DSQL node tree, BLR, DYN, etc)
Contributor(s):
Nickolay Samofatov

* Improved PLAN clause
Allowed to specify more possible paths for the engine
Contributor(s):
Dmitry Yemanov

* Further optimizer improvements
1) MERGE PLAN is may now be generated for joins using equality comparsion on expressions
2) Better logic regarding unique indices handling
3) Improved logic for OR expressions
Contributor(s):
Arno Brinkman

* New local protocol
XNET is now used as default local protocol for Windows and is supported in CS builds
Contributor(s):
Dmitry Yemanov

* Services API are fully ported to Classic architecture
All Services API are supported on Linux and Windows CS
Contributor(s):
Nickolay Samofatov

* SUBSTRING enhanced
SUBSTRING built-in function now supports arbitrary expressions in parameters
Contributor(s):
Dmitry Yemanov

* Added LEAVE syntax support
PSQL loops now may be marked with labels and terminated in Java style
Contributor(s):
Dmitry Yemanov

* Fix SF #750659
Generators values were resisting metadata-only backup
Contributor(s):
Claudio Varderrama

* Fix SF #544132, #728839
Problems with nulls handling in UDFs
Contributor(s):
Claudio Varderrama

* Fix SF #784121
Problems with some expressions in outer join conditions
Contributor(s):
Claudio Varderrama

* Slightly reworked synchronization logic
1) Significantly reduce thread lock contention in lock manager and in SuperServer thread pool manager
2) Fix rare race condition that could cause SS engine to hang during request processing until next request arrival
3) Make lock manager memory dumps more informative (OWN_hung is detected correctly)
4) Decouple lock manager synchronization objects for different engine instances
Contributor(s):
Nickolay Samofatov

* Derived tables support
Implemented support for derived tables in DSQL (subqueries in FROM clause) as defined by SQL200X
Contributor(s):
Arno Brinkman

* Enhanced GROUP BY clause
Implemented support for arbitrary expressions in GROUP BY clause
Contributor(s):
Arno Brinkman

* New backup technology
Implemented fast on-line physical incremental backup facilities
Contributor(s):
Nickolay Samofatov

* Generic cleanup.
Various cleaning and tidying up of code, warnings removal, 64-bitness cleanup, numerious minor bugfixes
Contributor(s):
Blas Rodriguez Somoza
Dmitry Yemanov
Nickolay Samofatov

* Generic cleanup
Large amount of ongoing code cleanup and style standartization. In particular, broken WAL and journalling code is fully cleaned out
Contributor(s):
Claudio Varderrama

не получилось у меня его поставить - уже при установке лезут какие-то ошибки...
кстати, с сайта эту версию уже прибрали - видимо, совсем глюкавая еще