The latest rumors have suggested that Necrons might be seeing a model wave, but that Blood Angels will be the next 40k codex release. The timing of this we are not yet sure of, but when we start seeing info like this, it highly suggests that it will not be too far out.
Please remember that these are rumors.
via Steve the Warboss on Faeit 212
I got some Informations:
-New Character, a Captain (maybe 1.Company)
-Mephiston in plastic
-New Terminator Box with all weapon options
-New Assault Marine Box
-New generic Dreadnought
-Honour Guard Box (maybe only an repack)
-Mephiston will be a LoW, he turned into a "uber" psyker
-BA Painting Guide
-Suppliment featuring the new captain
-The Flesh Tearers are now watched by the Inquisition
-A Rumor make the round in the Imperium, one of the BA successor chapters are traitors (not the Flesh Tearers)
-The attitude of Imperial authorities over the BA worsen