I work closely with tech startups and am often asked to help market a seemingly very minimal MVP. More often than not, these startups have no funding and limited resources to market their product. They turn to us for help. I question whether they are even ready to go to market and what they can do on their own dime to make it worthwhile.
I believe it's never too early to start building a brand and culture and that can be done before there's even a MVP. They can work on getting people involved in what they're doing, make new connections, and build some excitement via their blog, social media, videos, or sharing the process of what they're making. It's a great opportunity to start building a foundation for what will come later without directly going to traditional marketing.