How to say "If you would like to know any updates , you can always call or message me"
如果您想要了解后续进展的话，可以随时电话或邮件联系我。

Toosky Hierot's comment ”欲获知后续进展如何“ sounds a bit too literary to me. I think "如果您想要了解后续进展的话" is a more common way to say it, though I agree 进展 or 后续进展 is the right word choice here