Recommended projects and Interview prep now tell you plainly when they open. Projects open once you complete the chapters shown on the page, and Interview prep opens after its chapters or once your readiness reaches 70%. What each will contain is listed in the column beside it, and the extra cards are gone.
On a chapter, "Back to roadmap" now sits at the start of the tab row, and the page header names the chapter in lighter, slightly smaller text, so the top of the page takes less room.