I bought my "TP-LINK AC RE450" in July 2016 and it has V. 1.1. The thing runs excellent by the way!!!
Please ask Digitec directly which version is being sold!

Now it is V3. (●'◡'●)

I bought in autumn 2019 and got the v3 (I can't recommend it, had also written a review about it)

I bought my 2 6-12 months ago and they are V1. running OpenWRT. ;)