[...] the problem is that they do not tell what is the real reason of delay and what exact HW changes were made and even why [...], but telling "all you need to know..." [...]
The key difference from the user point of view is the more balanced color spectrum. We are also publishing a tablet hardware update post soon here on the blog, and there we’ll explain the HW progress in more detail.
The hardware and software tracks are separate and both of them do have an affect on the delay (as said in the blog). ’Sailfish OS 2.0’ is a term we use for the evolution of the OS, and many related features will be on the phone already during the Spring. We will also continue the monthly updates to Sailfish OS.