Slashphone has posted a list of the bug fixes and new features that are part of the new RC33 Firmware 1.1 update that started filtering out to T-Mobile G1 users this week.

New features include the Android Market’s application update check and new comment spam marking function, Google’s Voice Search, and the ability to save photos from MMS messages.

In terms of bugs, the email app has been updated to deal properly with Comcast email, and it should now exit cleanly instead of issuing the “Force Close” popup.  IM sessions can withstand WiFi being turned on and off now, a calendar reminder bug has been fixed, and an issue with some G1′s hanging during power-up has also been addressed.

More screen shots, courtesy Slashphone, available below.