Update: According to Google’s press release, the Play Store Nexus 4 does in fact have HSPA+ 42Mbps connectivity as well, it’s the Play Store specs that are incorrect.

In an effort to clear up some confusion, I’ve re-confirmed with T-Mobile that the Nexus 4 sold by T-Mobile will have HSPA+ 42Mbps connectivity on board. That’s different from the Google Play store which indicates the Nexus 4 will have HSPA+ 21Mbps. There doesn’t appear to be any other differences between the T-Mobile and Play Store models, other than the radio. Moreover, it’s entirely possible that the Play Store specs are remnants of the Galaxy Nexus and will be updated to show the radio later on. Then again, that may be wishful thinking and the unlocked version may in fact only be 21Mbps.

To clear up one more question, the T-Mobile “edition” of the Nexus 4 is bone stock, no add-ons, bloatware or carrier branding. You can take a peek at the Fact Sheet below which indicates all the T-Mobile related material on the Nexus 4. In other words, there doesn’t seem to be any differences between the T-Mobile Nexus 4 and the unlocked Nexus 4 purchased from the Play Store, other than the HSPA+ radio.