Activision Blizzard has released a new updated release schedule that shows a few previously confirmed titles suspiciously absent.

While titles such as Crash Bandicoot, Spyro the Dragon and The Mummy sequels have all been reconfirmed in the release, other games that were due to be published by Sierra before it was taken over by Activision were not.

Sierra (previously Vivendi) was set to publish Ghostbusters, 50 Cent: Blood on the Sand and Brutal Legend - but they have all disappeared from the schedule.

This doesn't mean the games won't ever be released - Activision Blizzard may have decided to sell the rights to other publishers. We just don't know as yet.

Activision boss Mike Griffith said: "We have conducted a thorough review of Vivendi Games' brand portfolio and are retaining those franchises and titles that are a strong fit with our long-term product strategy. We are reviewing our options regarding those titles that we will not be publishing."