New statistics via AdDuplex, the popular cross-promotion network for Windows 8 and Windows Phone apps, reveal that in just three months’ time there are now more active Windows Phone 8 users than Windows Phone 7.

No firm numbers for sales of Windows Phone 7 or Windows Phone 8 have ever been revealed but at least according to AdDuplex’s data, Windows Phone 8 now accounts for 50.01% of Windows Phones using the AdDuplex network while Windows Phone 7.x has fallen to 49.99%.

That’s quite an impressive feat considering Windows Phone 7.x had been on the market for 2 years while Windows Phone 8 is just shy of 90 days.

Whether this is because Windows Phone 7.x sales were so modest that the bar was low or because Windows Phone 8 is finally catching on we’re not prepared to say but the news is certainly leaning in the right direction.

Microsoft previously reported that Windows Phone 8 sales were four-times what they were in the previous year and these new numbers seem to confirm that trend.

Back in January, data revealed that in just 60 days the AT&T Nokia Lumia 920 was leading the Windows Phone race accounting for 16% of all devices while the HTC 8X was further behind at 11% despite being available on two more carriers (T-Mobile, Verizon).

As a total, Nokia dominates with 54% of all Windows Phone in the US, which include the Lumia 710, 810, 820, 822, 900 and 920, a trend we can only imagine has increased in the proceeding 30 days.

Source: Twitter (@AdDuplex)