Apple plans its events like clockwork, so maybe this one's not much of a surprise: the company is planning a March 2016 event, where it would likely show off the new version of the Apple Watch, 9to5Mac reports. Apple could also use this event to unveil the recently rumored 4-inch iPhone.

Nothing is known for sure about the Apple Watch 2, and even the speculation around the sequel device is thin. But it's easy to imagine which direction Apple will take the new or improved features, like a thinner profile or better battery life and health tracking.

We still don't know much about the second Apple Watch

The picture of Apple's 4-inch iPhone is a bit clearer, with analyst Ming-Chi Kuo expecting NFC and an A9 processor — but no 3D Touch. What still seems pretty fuzzy is what this 4-inch phone will look like; 9to5Mac's source frames it as the "iPhone 6C," while Kuo seemed to think that it will more closely resemble the glass and metal of the iPhones 5 and 6.

What's certain is that the availability of small phones (read: phones around the 4-inch mark) has dried up in recent years. Apple has been one of the only major manufacturers to make phones in this size range, so it wouldn't be surprising if the company continued to exploit that market advantage. Couple that with a revamped Apple Watch, something that many people seem to be waiting for, and this little spring event could make a lot of noise.