Are Gummy Bear Breast Implants in Round Shape? if So, After Years the Shape of Breast Would Be Firm and Perky?

Gummy Bear Breast Implants are a specific type of silicone breast implant. These implants have "cohesive, cross-linked silicone" bonds, that may prevent leaking of liquid silicone after rupture, and help to maintain the shape of the implant.
Despite the release of a newer version of the silicone implant--one that has an anatomic "teardrop" shape--the cohesive implant is not new. Previous iterations of round cohesive implants have been available since 2006. The current "gummy bear" silicone implant is the 5th generation of silicone implants on the market.
The major benefits of the "gummy bear" implant are that it has a natural feel and that it is "form-stable": the implant does not easily distort with pressure.
The newest anatomic "gummy bear" implants do not provide as much fullness to the upper portion of the breast (superior pole), but instead attempt to create a more aesthetically pleasing breast shape. If the goal of surgery is to achieve an "augmented look" the round implant is best. Placing silicone implants in the subglandular plane (beneath the breast and on top of the muscle), while most striking in terms of projection, is associated with an increased risk of capsular contracture; caution should be taken with this approach, and an understanding of the impact of this technique must be understood.

The newest cohesive gel implant from Allergan combines the look and fill characteristics of the very popular Inspira implants with the form stable 410 gel.  The result is an implant which hold it's shape in the upper pole giving a more round and full upper pole.  I have done a lot of these new implants and with very positive feedback from my patients.  The majority of these patients have consulted with me for revisions because they were wanting more upper pole fullness. 

Thank you for the question and goal picture. Good  advice would necessitate viewing pictures of your current breasts or in-person examination.  To answer your question, cohesive silicone gel breast implants come in round as well as “anatomical” shapes.  Keep in mind that, sometimes, patients looking for the full "round, fake” look benefit from saline breast implants.  Of course, there are pros/cons associated with each type of breast implant option.

 Best to seek in-person consultation with board-certified plastic surgeons who can demonstrate significant experience achieving the results you are looking for. Ask to see lots of examples of the work and communicate your goals clearly.

In my practice, I find the use of goal pictures, such as  you have posted, very helpful during the communication process. Sometimes, depending on how much negative breast tissue of patient has, this "round” look is not achievable without additional maneuvers being performed.  Achieving realistic expectations is part of the preoperative communication process.

 I hope this, and the attached link, helps.