Royal Mail have provided these images for the stamps to be issued in February - preliminary images were shown earlier. Click on any of these to see larger versions.
There will be two values of blue Machin Faststamps, 2nd class and 2nd class Large. I didn't notice that the year code MA12 was included in the original publicity image, and the same code is shown on these two, just NW of the Queen's nose.
The higher resolution images of the Jane Austen publicity images (these are still not actual stamps) haven't improved them greatly but if you click on them you can see them as two larger images:
These images of the Pond Life faststamps show no year code in the background, and the spacing of the weight limit is different to that used previously (and is probably, therefore, wrong!)
ROC ~ Rooster ATM FDC - Republic of China (Taiwan) Rooster ATM FDC, posted on February 23, 2017 from Xansia White Rooster postal agency.