Popular Instant Messaging application WhatsApp will end support for numerous platforms after December 31. According to an official blog post, the Facebook-owned messaging application will stop supporting BlackBerry 10, BlackBerry OS, along with Windows 8.1 or older, after December 31, 2017.

The company’s blog post also points out that users on the aforementioned platforms will be unable to create new accounts, nor will they able to verify existing accounts once supports after the end of this calendar year.

“We will no longer actively develop for these platforms; some features may stop functioning at any time. These platforms don’t offer the kind of capabilities we need to expand our app’s features in the future. If you use one of these affected mobile devices, we recommend upgrading to a newer OS version, or to a newer Android running OS 4.0+, iPhone running iOS 7+, or Windows Phone 8.1+ so that you can continue using WhatsApp,” the company said.

That being said, end of support does not mean users won’t be able access their accounts on these platforms. The company says users will still get access to their WhatsApp account, though they should not expect any kind of security or feature updates in the future.

WhatsApp had already announced its plans to end support for many of the older platforms, hence the move should not come as a surprise. Microsoft has already admitted that Windows Mobile is dead, while BlackBerry 0S and BlackBerry 10 have been abandoned by the Canadian manufacturer as BlackBerry phones are now manufactured by China-based TCL and run Google’s Android OS.

Elsewhere, WhatsApp also notes that will stop support for the Nokia S40 after December 2018. In addition, the messaging app will drop support for Android OS v2.3.7 or older, after February 1, 2020. WhatsApp, earlier this year ended support for Nokia phones running Symbian S60, iOS 6, as well as Android versions older than 2.3.3.

In other related news, WhatsApp also announced a new standalone app for business earlier this month, to give companies a formal route to conduct business activities on the messaging app.

The company said there’ll be two different categories of Verified accounts. One of them will be for small businesses and enterprises who can use the feature for free, while the other will be a separate service for businesses who operate on a large scale. WhatsApp said businesses will be able to use the app for providing key information such as courier delivery, flight updates, hotel bookings, prices and much more.