It is instead being replaced by the not-so-bad Lumia 521 , which also gets a release date for Wednesday, April 24th .

As a follow up to our earlier report about the T-Mobile Lumia 810 becoming unavailable for purchase (unless you want a refurb), we can confirm now that it has indeed been EOL’d (end of life) on the carrier.

The Lumia 521, while a capable device is certainly a few notches below the Lumia 810, a device which is fairly solid (albeit a bit dry in design). The 521, a custom variant of the Lumia 520, packs a mild 4” 800 x 480 display, 512RAM, 8GB storage,a microSD slot, 5 megapixel camera with 720p video recording, 9.9mm thick and HSPA+ 21Mbps connectivity. It should retail for around $200 once released, off contract.

As to the HTC 8X, the good news there is that device has not officially been EOL’d, so there is hope yet for it to return to the store shelves of T-Mobile in the near future.

For those looking for another highend Nokia, T-Mobile is supposed to get the 'Catwalk' aluminum Lumia sometime in June.

Source: TMoNews; Thanks, Justin B., for the tip!