Last summer, Paramount complicated the high-definition format war by yanking its Blu-ray movies off retail shelves, vowing to release movies only on HD-DVD. Well, things change. Now that HD-DVD is good and dead, with discs in the defunct format starting to show up in greatly discounted clearance sales, Paramount can dominate the new release shelf simply by bringing its old titles back into print. While early reports suggested the deluge would occur this week, online shoppers seeking The Untouchables or Disturbia (starring Indiana Jones’ new sidekick Shia LaBeouf) will find they aren’t yet in stock at some retailers, who expect them to arrive next Tuesday. Some brick-and-mortar stores like Fry’s appear to have these titles on shelves, though, and smaller online retailers like CD Universe are offering Paramount titles like the Mission Impossible trilogy for immediate delivery. Whether the discrepancy is just a matter of mixed signals in the shipping department or something more complex, the studio is definitely back in the Blu-ray biz, with new (that is, non-reissue) films in the pipeline for early June release — most notably, the magnificent There Will Be Blood, which earned star Daniel Day Lewis an Oscar and will surely take advantage of the format’s crisp visuals and rich sound.