A highly visible change was made to the Tiger's track link design in 1943. A new type of track link with better grip was introduced.
This photo shows the later track links. The new feature is the diagonal ridges on the outer face.
The date of the change
No document has been found specifying the date of this change. In earlier decades we assumed that the new tracks arrived in early 1944 along with the "steel" wheels. But there is no dependency between the two and thus no reason for them to be introduced together.
In 1999, Doyle and Jentz stated that these tracks were introduced as early as October 1943. That would imply that about 40% of "Mid" Tigers had the original tracks, and up to 250 of them had these ridged tracks. [1, see 220.127.116.11]
Exhaustive study of photographs supports this idea. I can find only a single Tiger, from the end of the "Mid" block, equipped with the "flat" tracks. That specific Tiger is Otto Carius' second Tiger "217", the subject of another Takom kit. But photographs show it equipped with "ridged" tracks in early 1944, and then with the old "flat" tracks in Summer 1944. We may infer that they were replacements, and not its factory-fitted tracks.
The kit's tracks
This kit, as per Takom's published images, seems to represent the final few months of the "Mid Tiger" period, November-December 1943. There is no reason to think that a pre-November Tiger could be built from this kit; it would need Feifel attachments, S-mine equipment, and other features that are not shown in Takom's images.
The kit generously provides both types of track. But I doubt that the "ridged" type would be appropriate for any of its four decal options (which are not yet announced).
 DW to Tiger 1