Jesus... haven't we been talking about this for months now??
Yes, Xecutor has said they'll only release 512K bios from now on.
Yes, a 512K bios will not fit on a matrix.
No, that doesn't make your Matrix obsolete... just a little behind.
You'll still be able to use it to do everything you need. If there's a feature in a 512K bios that you simply "must have", well, that's between you and your Id. When that Palm OS version of Battle Droids only ran on color screens, did you bitch about the fact that you had to make a choice between replacing your brand new Palm Vx, or doing without Battle Droids? Wait... don't answer that
I'd hasten to guess that there will still be 256K bios' released, just not by the Xecutor team.
Give it a rest.