I don't think anyone could say conclusively, though I would 99% guarantee that the Anniversary Special will not be included in Series 8, nor will the upcoming Christmas Special. The way I see it is that these two upcoming specials sit outside of the 'series' label entirely.
In terms of keeping things looking as tidy as can be I see these two upcoming episodes as 'The Eleventh Doctor Specials'... his era will be rounded off much like the Tenth Doctor's was with his 'Tenth Doctor Specials', outside of numerical series
Series 1 - Eccleston
Series 2 - Tennant
Series 3 - Tennant
Series 4 - Tennant
Specials - Tennant
Series 5 - Smith
Series 6 - Smith
Series 7 - Smith
Specials - Smith