Bic Mac is about 30 years old in this image, he's married to Sugar Belle and has a few small foals with her. He continues to work on the farm and assists his wife with her baking by providing her with many ingredients from the farm. When Granny Smith passed (he was about 27), he and Apple Jack took over the sole responsibility of the farm. They try to stay true to what Granny wanted and even got a little more developed, adding in a pear grove for their deceased mother.
Apple Jack is a but cold as she gets older. In this image she's about 27 in this, divorced from Flim Slim, has two small foals — twins. She's also become distant with Apple Bloom because she disproved of some of her choices in the past. She's single and not looking for any kind of relationship. She still works at the family farm and takes care of her kids and her nieces and nephews. She still loves her sister very much but has a hard time with her "husband".
Apple Bloom being 22 in this image, grew up pretty quickly and had a steady relationship with Tender Taps before she felt like he cared more about his career than he did her. She left him and ended up marrying at the age of 21 to Trouble Shoes. She didn't mind that he was so much older than her (I estimate his age to be about 35-40). She kind of looked for a father figure since she lacked that so much. And though she's happy with Trouble Shoes, though Apple Jack doesn't approve.
Rainbow Dash is 25 in this image and has grown out her mane quite a bit. She has become a teacher at the Wonder Bolts Academy and supported her little sister as she became a Wonder Bolt herself. Not long after Scootaloo spent time with Rainbow's parents, they decided to legally adopt her and Scoots became Rainbow Dash's little sister. They became very close and did a lot of things together, even got sister tattoos of each other's colors in feather designs on their neck/shoulder.
Scootaloo is currently dating another mare she met in the Wonder Bolts Academy Sweet Pop . She's 21 and a lively mare who spends most of her time in Cloudsdale with her big sister and girlfriend. She makes sure to meet up with Apple Bloom whenever she can, and Sweetie Belle even though she moved to Manehatten for her work.