Search Engine Land are reporting seeing hyperlinks within description line 1 and 2 of ads. This is occurring where the site link copy is identical to ad text copy, therefore Google is just turning the ad text into the site link.
This happens when an ad is set up to have site links but does not meet the CTR threshold despite appearing in one of the top 3 ad positions. Instead of displaying the site links, if any one site link matches the text in the link, it appears embedded. This should make site links available for more users.
I am not sure if this is positive – it is removing the site link (which takes up room and creates more impact on the search results page) and the hyperlink within the body may not be that noticeable nor intuitive to the average Google user.
Summary of Site Link Options
1. At high ad quality and high CTR in positions 1-3 – up to 6 site links over 3 lines
2. Medium quality, medium CTR, positions 1-3 – 1-4 site links over 1 line
3. Lower quality, lower CTR, positions 1-2 but site links still enabled and wording featured in creative text – embedded site link