If you're used to sitting down at Starbucks and signing into the Wi-Fi network with your pre-paid T-Mobile Hotspot time, get ready for a change. Though you may hardly notice.

Starting this spring and rolling across the country by the end of the year, the coffee chain is dropping T-Mobile as its Wi-Fi provider in 7,000 locations in the United States in favor of AT&T. This comes after working with T-Mobile for several years, but there's no word on why.

AT&T can now claim a 17,000 location strong hotspot network in the U.S. Many of those locations are actually operated by Wayport, such as the Wi-Fi found at thousands of McDonald's restaurants. But AT&T, in turn, provides the backhaul connection for those Wi-Fi connections.

AT&T is going to be nice to current users. Starbucks says AT&T cut a deal with T-Mobile so current users can continue to access the Wi-Fi at Starbucks without paying extra. AT&T's own press release states that Starbucks card holders can have two free hours of Wi-Fi per day; it usually costs $3.99 per two hour session (T-Mobile charged $6 per hour). Users can also pay $19.99 a month, flat. Current subscribers to AT&T broadband services at home get free access at hotspots any time they want -- that goes for all the AT&T hotspots, Starbucks and non.

Bonus for you 100,000 baristas and other Starbucks employees: you get gratis access in any location. Hopefully, it's not your only raise this year.