Back to the rumors and Deckers (woot) I would like to point out that the way they are doing this is a two fold process (actually could be multifold for all I know) hence the rumor. They are adding a layer to the matrix that will keep the general populace on one side. What is on the other I have no idea honestly. However, this layer of security will create 'noise' that will prevent the usual freedom that hackers currently enjoy being able to hack anything from anywhere that is linked to the Matrix. The 'noise' can only be overcome by proximity. Decks (and this is guesswork) are going to be what is needed to cut through the security layer to the Matrix underneath.
Oh, this part is not rumor but from one of the books Shadowrun 2050. In it they have added to Cyberdecks with what they called 'Luggage' which the best I can figure is the equivalent to laptop. The cyberdeck is the cellphone, luggage is the laptop, and the cyberterminal is the personal computer. I don't know if this is going to have a factor on the 'future' cyberdecks.
Oh putting this under here because it is development not confirmed. Though the phrasing seems to link it to confirmed status.
http://www.shadowrun.com/shadowrun-tabletop/2013/05/04/sr5-development-wireless-bonuses/So the preview I linked earlier has some shadow slang in it and it refers to hackers. It makes a differential between hacker who uses a cyberdeck and a technomancer who uses their talent. So I was working on a few house rules and this is how I had written it up. I think I might be running on the right track. I have to admit I am better at predicting the path of 5th than I thought.