hi-def

Verizon is expected to roll out a long-awaited fourth generation wireless network by year end, promising to boost data speeds by 10 times. But watch out. While it may enable sharing hi-def video, say, over cellphones, it could also give the carrier a reason to raise monthly fees.

In a seemingly Scrooge-like move, Hollywood studios may soon restrict newly released DVDs to sales-only for several weeks before allowing them to be available for rental from places such as Netflix, Blockbuster or your local video store. Keen on reversing the trend of falling DVD sales and...