It appears to be all but official: CBS will be releasing Star Trek: The Next Generation on high-def Blu-Ray discs in the near future. An official announcement could come as soon as tomorrow, but several sources have confirmed that the studio will release a 4-episode "sampler" disc before the end of the year. Season sets will likely follow next year as the episodes are converted. The first disc will include the series pilot, "Encounter at Farpoint" Parts 1 & 2, "The Inner Light," and "Sins of the Father."
TVShowsonDVD.com has more info on the upcoming TNG Blu-Ray release here: