Hi all,

This is going to be my first post in this community so apologies for any wrong doings in advance.

I am currently embarking on a project that requires an upgrade from 3.6 to 4.1 of Hibernate. Since the 4.X major release,a lot of things have changed in the API/SPI side of things. I am spending a lot of time trying to figure out what the changes are exactly, but was hoping for an online guide/changelist etc. documenting all the changes that happened in 4.X release. For instance, what I found out is:

The JDBCContext class has been removed (does it actually have any substitute?)
TransactionFactory.Context has been removed - I believe TransactionContext + TransactionEnvirnment are the replacements for it
JTAHelper class has been removed
classic.Session has been removed
SessionImplementor has certain methods added/removed
ConnectionManager class has been removed
Batcher interface should be substituted with new Batch interface
A lot of general package renaming
TransactionFactory Interface has been redesigned

Is there any resource that would document, in the above fashion, the full list of changes/improvements? Thanks a lot in advance for any help.