CDJapan is listing a 12/21/03 release date for the second and final half of Transformers Victory. The boxset is listed as limited, much like the other Transformers DVDs, so once it's gone, it's gone. The price tag might be a big turn off at 20,000 YEN or 187$ USD. The DVD set includes 4 DVDs, Japanese Language, 500 min runtime and are encoded in NTSC Region 2 - No English DUB or SUB available.
On another note, most of the Japanese G1 DVDs are OOP, too. The original series (seasons 1 & 2), 2010 (season 3), Headmasters and Masterforce are now history. AMO Tokyo mentions that they were Limited First Print Runs, and that there is no plans to make more. So if you want to snag some Japanese G1 series, you best be quick to get the first Victory Boxset and pre-order the final one, since they probably won't be around past January 2004..