Pakistan, Sept. 10 -- Taylor Swift is celebrating her country music milestone for her Toy Story 5 song, I Knew It, I Knew You, but fans believe she might also be hinting at her next project at the same time. The 36-year-old pop superstar achieved her first Country Radio number 1 in 13 years, and celebrated by sending a handwritten note, which read, "You really know how to welcome a girl back! My first #1 in 13 years! Thank you country radio. Love, Taylor." Swifties did a double take on the number 13, as it holds much significance in the fandom, especially now that Swift's next album will be her 13th. According to fan theories, the next album which is currently in works, is also expected to be Swift's return to the country genre. Thus, the...