'The Wall Street Journal' quote in his article that we put at the end of the article, that Apple is working on the integration of cellular network connectivity, And a faster processor on the next generation of the Apple Watch.
Un standalone modem inside of the Apple Watch 2 It will allow the SmartWatch to function independently of the iPhone. The current generation Apple Watch relies heavily on the iPhone for network-related tasks, rendering it essentially useless when not connected to the iPhone. An integrated modem will allow the SmartWatch to avoid this problem, but also will increase your requirements referring to the Energy.
Since the Apple Watch is currently limited by its processing capacity, it's no wonder Apple includes a faster processor on the new watch.
The report that Apple has sold between 12 and 13 million of units in its first year, that is almost double what the original iPhone sold. However, despite these promising numbers, the Apple Watch has failed to capture the attention of consumers. This is probably due to the limited functionality, and because there are offers of other SmartWatch much lower, also that some are very complete.
It is not clear when Apple plans to launch the Apple Watch 2. There have also been conflicting reports about the features it will have, as one report claims it will be a 40 percent thinner than its predecessor and that he would be making his WWDC debut in 2016, while the other reports say that he is only going to focus exclusively on internal improvements. Having a modem with a micro sim, or some variant, would not make it slimmer, or that's my opinion.
Source [The Wall Street Journal]