Have searched but have not found a TextMate 2 .dmg file available for OS X 10.7 (Lion). Is there one downloadable online?
Also, there are pre-built binaries for TextMate 2 here: https://github.com/textmate/textmate/downloads
However, I downloaded the tar.gz and decompressed it fully, but don't see anything that looks similar to something I could put into the Applications directory. Update: The zip/tar.gz of the repo was removed, so you can intuitively download the .tbz and decompress it to get the app now.
Best Answer
You can download the latest TextMate 2.0 from the TextMate homepage, under
http://macromates.com/download
It used to be available from GitHub, but pre-builds are no longer necessary since TextMate 2 now includes an auto-update mechanism.