I never heard any popular companies that invested a lot in Bitcoins or any crypto coins and this is the first time I've read a company investing into it.
You're probably living under a rock or you simply don't follow news and trends. Popular companies like IBM, Microsoft, Samsung and even financial institutions like JP Morgan are getting involved with Cryptocurrencies. For instance, Samsung is creating its own blockchain for their Ecosystem. Facebook too, is launching Calibra Project which is crypto powered. There's more to this than I've mentioned.
Such types of meeting by influentia personalities promote the adoption of cryptocurrencies around the globe although it was just normal meetup not any official meeting to announce something.But twitter will adopt blockchain technology to compete with other social media modes like facebook to gain more customers and increase profit base.So we hope most people are aware about these coins like bitcoin and adopt them in wider way.
You're getting the reason for this thread wrong. Of course the thread isn't about any 'announcement'. It's just to see that Bitcoin isn't just some small initiative/movement anymore. But one currently on a global level. Government/big institutions are more aware of bitcoin than ever. There's no telling what's coming next... Might just be a big announcement.