HP recently indicated that it will cease all backend support for WebOS devices on January 15. After that time, WebOS device owners will no longer be able to download or update apps, reset or restore their devices, setup new devices, or retrieve lost passwords.
According to HP, the web services shut down will not disable existing hardware. HP recommends that WebOS device owners download any apps they may want to keep prior to November 1, 2014. "Shutting down webOS cloud services is part of an orderly end of life program," explained HP. "HP announced the end of WebOS devices over 3 years ago, but the services were kept running to allow customers to continue to have a richer user experience. The user count has dwindled to the point where it is no longer viable to keep the services running."
HP acquired WebOS when it bought Palm in 2010. HP killed its Palm hardware business in 2011 and has since open-sourced WebOS. LG eventually purchased WebOS from HP, for use in select consumer electronic devices.
Source: HP WebOS Developer Center