Hi! Replacing framed shower doors with Frameless Glass Shower Doors later on is definitely possible and a common upgrade. It typically won't require redoing your tile, as long as the original install was done cleanly and the tile is in good condition. There may be some minor patching or cleaning where the framed unit was attached, but a professional installer can usually handle that with minimal disruption. Just make sure your tile layout is compatible with a future frameless install when planning your build.
https://www.mcdowellglass.com/frameless-shower-doors

Frameless glass showers definitely have a sleek, modern look, but they’re not for everyone. Some people find them harder to keep clean due to water spots, and the open design can feel a bit too exposed. If you're considering one, it's worth weighing both the pros and cons. For those still interested, Frameless Glass Shower Doors from McDowell Glass offer quality options that can be customized to suit your space and comfort preferences.
https://www.mcdowellglass.com/frameless-shower-doors