* Originally, Mega Man & Bass was meant to be an "alternate continuation" of the Mega Man classic series that followed the events of Mega Man 8, but Mega Man 9's ending directly referenced the ending of Mega Man & Bass (as well as the endings of the other eight numerical games in the series).
Are there any sources to back that up? MM Wiki doesnt seem to have any for that particular bit of trivia. And MM Wikia is NOT the best place to go for accurate Mega Man information. More specifically when it concerns story. The Mega Man network Wiki is better.
I mean, it's working title WAS 8.5, after all. Nowhere have I ever read that it was supposed to be an alternate continuity.
Also, Mega Man 9 directly references MM&B in the Wily begging montage, meaning it IS in fact part of the timeline, not alternate.
Besides, Capcom doesnt do Alternate Continuities. Not like DC/Marvel. The Earth 1/2/3 etc. It's either part of the timeline, or it's simply not. Usually the licensed products are sometimes excluded.
That's not to say they have not done Alternate realities/universes, but not alternate continuities of the same timeline.
Actually, Rockman Online would have been the first time something like that was done. (and again, it was not made by Capcom)
Rockman 9, whose canonity is debatable given it and 10 were made by Inti Creates.
Everything is canonical. It's all part of the Rockman Canon. Canonicity doesnt mean what you think it means.
However, Rockman 9 and 10 are easily part of the timeline because the Zero and ZX series are part of the timeline, and both are made by Inti as well. Rockman 10 directly ties into the X series with the Roboenza becoming the basis for the Sigma Virus, and the reason for Light giving X Perfect Virus Countermeasures, making him completely immune to the Sigma Virus.
The Zero series timeline references both Rockman 10, and the events that it's plot later caused in the X series.
Mainly how the Roboenza made Light consider that X might fight virus infected Robots in the future, and how it was the basis for the Sigma Virus that was put in Zero's Capsule, which made Zero good and Sigma evil.
TL;DR, 8.5, 9, and 10 are all part of the timeline, since the Zero series and ZX series are too.