After the updates to Google + and Twitter, another big application gets a major update. We're talking about Google's official YouTube application, now that can play HD video on smartphones who are a bit 'older and have an on board Android 2.2 or Android 2.3 .
In fact, this feature was already present on Honeycomb and ICS while lacking on older versions of the android os. However, mainly due to problems of hardware, not all smart phones have on board the os will receive the update, and unfortunately there is a list of supported and those not.
Our advice is to go and check for your self ,if there is update available for your Android smartphone.