Last year, Chrome introduced manifest V2 to Apps and Extension developers, which brings a variety of security and API improvements such as a default Content Security Policy. As of Chrome 18, manifest V1 was officially deprecated. At the time, we published our manifest version support schedule to give developers transparency and insight into our plans for migrating to the new version.

Today, we’re announcing a slight update to that schedule, to let developers know that they have until Monday, March 4, 2013 to make updates to their existing manifest V1-based items. After that date, the will block all updates to products based on manifest V1 unless the update includes switching it to manifest V2.

Chrome: Remember that six months or so when Google searches displayed tweets along with normal results? Twitter stopped that, but if you're a Chrome user you can add that functionality back in with the browser extension HashPlug.

Even though Chrome extensions and legacy packaged apps are similar at a technical level, users have very different expectations for how extensions and apps should look and behave. Users expect extensions to interact with the whole browser, whereas they expect apps to act solely in their containing tab or window.

Until now, all Chrome legacy packaged apps could request the same permissions and use the same APIs as extensions to interact with Chrome. In order to make the capabilities of legacy packaged apps more closely align with user expectations, we’ve decided to limit the extensions permissions that legacy packaged apps can request.

Beginning this week, you won’t be able to publish legacy packaged apps in the Chrome Web Store that request any of the following permissions:
(a) any host permissions, including "< all urls >" 
(b) the top-level "content_scripts" key 
(c) the "debugger", "devtools", "pageCapture", "plugin", "proxy", "tabs'", "history", "webNavigation" permissions 
(d) the top-level "npapi" key 

Chrome: DeadMouse is a Chrome extension that allows you to surf the web with only your keyboard. The idea is simple: if you want to click a link, just start typing it. DeadMouse will show you that you've selected it by making it wiggle on the page. All you have to do is press enter to choose it, tab to select the next option, or delete to cancel your selection. More »

Chrome and Google TV: I recently discovered that Google TV is actually pretty great, and ever since I've been hearing about cool stuff people are doing with the platform. One such example is Chromemote, a Chrome extension that can control your Google TV. More »