We may not know when [Rec] 2 will arrive in the U.S., but plans for a third movie are underway.
Spanish writer/directors Jaume Balagueró and Paco Plaza previously stated that they "didn't think" they would return for [Rec] 3 except as producers, but, according to DreadCentral,who caught up with Balagueró at a screening for [Rec] 2, both Balagueró and Plaza indeed plan to return and already have ideas for a third installment. Balagueró says the third movie will likely take place outside of the building that housed the first two [Rec] films. Spanish distributor Filmax is already actively planning the third movie.
No word on when [Rec] 3 will be made, as Balagueró is busy prepping his latest non-[Rec] movie, Flatmate.