I don't think this means that they will be excluded from new updates via driver releases.
I'm sure they'll still fix glitches in new games. would be silly not to since maxwell was their best selling lineup.
Tbh, i feel this isn't "abandoning" maxwell so much as part of the usual marketing strategy where the next gen (pascal) is being given center stage.
after all, production and shipments of the 900 series has probably stopped completely by now and, with the exception of the 950, pascal replacements are out for most of the maxwell lineup.
and yes, the title makes the author seem like a fanboi.