Apple is planning an event in March 2016 where the company is expected to launch their next generation Apple watch, the Apple watch 2 and a 4-inch iPhone 6C is also expected to be unveiled at the event. The Apple watch which was launched almost a year back is due for the next version and the March event is most likely set for this device.
Apple has mentioned earlier that it has been developing new technologies for its next generation Apple watch even before the first gen Apple watch was shipped. We can expect a new camera module, sleep tracking, health sensor, wireless technologies included in the new Apple Watch. Whether the shape and size will be altered with is not known. The first generation Apple watch was updated in software and added new bands and colors to it.
The iPhone 6C which is being talked about, seems to be targeted at the users who were complaining about the bigger size of the iPhones which took off from the iPhone 6s etc having a 4.7-inch display. The 4-inch iPhone was particularly useful for single-handed use and easier for users with small hands. The iPhone 6C is expected to be having specifications in the iPhone 5s and iPhone 6s range sporting the same A9 chipset along with similar camera specifications.
Apple which mostly holds major events in the second half of the year has started to hold events in the first half from this year (2015), in March earlier this year Apple introduced a 12-inch MacBook along with REsearchKit iPhone framework along with finalizing the first version of Apple Watch.
Personally I feel like Apple should concentrate on decreasing the Bezel size of the iPhone having 4.7-inch display which will make the overall size of the iPhone a lot smaller and compact rather than to go for the 4-inch display device which seems a bit outdated at this time.