I do try to keep the Wordpress up to date.
There will be several official versions released:
Blu-Ray 720p BD-25
DL DVD PAL
DL DVD NTSC
720p mkv
Special features DVD-5 (only needed for mkv & DVD version as all these will feature on the Blu-Ray)
Personally, I bought an external Blu-Ray burner for $80 at Best Buy, which means I'm sure you could get one cheaper.