I think these photos + their captions are all POSSIBLE hints of the fifth album.
1. She loves taking pictures with a SEA in it.
2. The latest photo (the very first picture) has 4 words that ALL STARTS with S
3. There are two quotes that are obviously sad. (I think there will be songs which portrays both quotes.)
4. There has been TWO artwork Tay painted. And obviously, they were both FLOWERS which is probably representing the albums (the 5-flower painting).
BLUE for Taylor Swift (not yet blooming) YELLOW for Fearless (going down, the small flower) PURPLE for Speak Now (going left, the slightly bigger flower than Fearless flower) RED for Red (going up, the res one which is bigger than the two) PINK for the 5th album (the centre flower which is the biggest)
5. IDK if the Father’s Day photo is a hint but I think there’s a slight slight slight chance of it. But not impossible tho. Just a gut feeling of a Swiftie. Haha.
so those are my speculations about the fifth album.
WAIT. THERE’S MORE!
Since the latest photo (First Photo) has a lots of “S” going on in the caption, I am pretty much sure that the fifth album starts with S.