Absolutely, but that is no counter argument to yason's statement. There is no such thing as winter time. As far as I understand it it's just that Moscow's time zone is UTC+3 and they are changing that to UTC+4. It's not that unusual that a country is in an another time zone than it should be geographically, look at Spain for example.

From the article,they only said they won't be switching their clocks back this winter as they usually would.

They have "winter time" in the same sense that "it's the time we use in the winter" Remember, some places refer to daylight saving time as "blah summer time"

So yeah, all they're saying is they are staying on their equivalent of DST starting this year.