Honestly I think with TrekXII at the cinema and getting a Blu-ray release that year they don't want to oversaturate the market and spread out the Trek property and have product to release every year. Do you have any rumors or sources for thinking within 12-18 months there will be a ENT Blu-ray release since ENT is already in HD on Netflix. It is mostly the same Trek fans shelling out $80. for a Blu-ray season of TNG. No all ENT fans are not TNG fans and vice versa but you get the point.I think you might see Enterprise Blu-ray releases tucked between TNG-R releases starting in 2013.
Oh and there is a new review by Trekmovie up about the Next Level Blu-ray with new screencaps:
http://trekmovie.com/2012/01/30/star-trek-the-next-generation-the-next-level-review/