This month Windows Phone reached an important milestone - the latest version (WP8.1) now powers over half of all devices. Added together with devices still on WP8.0 (which could be updated to 8.1), that leaves about one seventh as legacy devices (WP7.x, which cannot be updated).
There's more good news too, new devices are climbing up in market share. There's a bit of bad news to go along with that too, it's the Lumia 63x that is seeing the biggest gains.
The Other group keeps growing - this month by 2% - which suggests there is some diversification going on in Windows Phone land, but the market is still heavily skewed towards the entry-level devices.
"Other" grew when it comes to manufacturers too, but Nokia - that is Microsoft - still has 95% of the market. That will change soon, but only because Microsoft has retired the "Nokia" brand in favor of its own.