BioShock 2 game confirmed for before November 2009 release

Good news to all you BioShock gaming fans because it has just been confirmed according to SlashGear for a before November 2009 release.
Personally I have not played the first Bioshock so I d not know what I am missing or not, many of you gamers were speculating if there was going to be a sequel and now at last the speculation can be laid to rest.
SlashGear have said that Take-Two has made it official, BioShock 2 will be developed by 2K Marin and will ship 4th quarter of fiscal 2009. Oh just so you know the fiscal Q4 ends at the end of October.
So tell me what is BioShock like and will the 2nd one be better?
