I'm hanging on my Lumia 920 for the coming months.
If Microsoft had had a decent flagship ready, I might had bought it. But at this point I'm on the verge to jump over to Android. I couldn't even recommend my wife a Lumia at the moment. There are several fashion related apps which won't come anytime soon to Windows phone.
In addition, phones like the Moto G 2nd generation have a great value for money and lollipop is guaranteed.
The old argument about the ecosystem is now a farce. I could switch to Android and would lose not a single Microsoft app and all apps would be superior to what I get on Windows Phone. In addition they will even get faster updates.
The only wildcard is Cortana. But it is only a question of time until they make it available for Android and iPhone.
I'm VERY disappointed in Microsoft. Don't forget: Windows 10 is still ~9 months away and will have to fight against Android Mango Smoothie and IOS 9. And chances are that it will be a typical 1.0 product and we will have to wait for 10.1 for the fixes.
come on Microsoft, throw us a bone!